IPMASQ problems

[Bill Fowler <bill@mesanetworks.net>]

We are masquerading on an internet connection and are having trouble with
email and ftp.  We are using Debian 2.2 and ipchains.  I followed the
example in the Linux IP Masquerade HOWTO.

1. With email we can receive mail OK but can only send very small messages -
anything with attachments or of any significant size gets:

- "TCP/IP connection was unexpectedly terminated by the server" - error
number 0x800ccc0F

- "SMTP server responded with an error" - error number 0x800ccc60

2. With ftp we can download OK but uploads do not work or are very slow.

3. We are also having problems with some web sites filling in forms.

Any help would be appreciated...


Thanks,

Bill